The report, released Thursday, shows that some of the money went to addresses in Bulgaria, Lithuania, Ireland and Singapore, The Associated Press reports. Six hundred fifty-five refunds were sent to a single address in Lithuania.

In the United States, Miami topped the charts for false refunds. Other cities ranking high on the list were Chicago, Detroit, Atlanta and Houston.

Tax hoodlums frequently purloin Social Security numbers from people who don't have to file tax returns, even dead people, the report says. The cheats also steal Social Security numbers from legitimate taxpayers, filing phony returns before the legitimate filers can finish theirs.